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I want to benchmark write speeds on a disk in an existing server setup. I suspect there is a problem with the write perf of the controller. Benchmarks I have tried (SiSoft Sandra, HDTune) report that write testing cannot be performed since the disk has partitions.

How can I do a write speed benchmark for disk that isn't empty? I don't mind if it is a rudimentary test, but something a bit better than me using a stopwatch and copying a file has to be possible?

  • You might also want to check the S.M.A.R.T. status of your drive, type "wmic diskdrive get status, caption, description" in cmd to list all disks and their status. – Martin Jun 14 '13 at 12:47
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I see that your request is for a Windows System, use the following commands :

winsat disk -drive "drive letter"

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There's so many disk speed utilities that you have not tried yet.
Try RoadKil or CrystalDiskMark for Windows, or BlackMagic for Mac.

  • I like the BlackMagic one for Mac OS a ton. On Linux machines, I combine the 'time' command with a call to 'dd'. That being said, 'dd' should be used with extreme care. – James T Snell Oct 29 '15 at 21:01

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